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US4132993A
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US
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Antenna element
Assignee: Raytheon Co
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Filing: 1975-11-19
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Granted: 1979-01-02
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Expires: 1995-11-19
Abstract
Abstract An antenna element for use in the nose section of a small missile is disclosed. The antenna element includes a ground plane and a pair of end fed radiating elements, the free ends thereof being fastened to ground plane. With such arrangement the antenna element fits compactly within the nose section and the ground plane provides a heat sink and structural support for the radiating elements.
Inventors
- 👤 John R. Ehrhardt
- 👤 George J. Monser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:29
CPC Classifications
H; H01; H01Q; H01Q9/00; H01Q9/04; H01Q9/16; H01Q9/28; H01Q1/00; H01Q1/27; H01Q1/28; H01Q1/281; H01Q9/26
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
128 words
An antenna element comprising: (a) a ground plane; (b) a pair of end fed radiating elements, each one having a first and second end, the first end of each one of the pair of radiating elements being fastened to the ground plane and the radiating elements having planar surfaces, such surfaces being disposed in intersecting planes; and (c) a feed line having a pair of terminals, each one feeding the second end of a different one of the pair of radiating elements, such feed line including an outer conductor and an inner conductor, the outer conductor being fastened to the ground plane, and wherein the second ends of the pair of radiating elements are coupled through a continuous transistion to a different one of the pair of conductors.
Claim 2
Dependent Claim
128 words
An antenna element comprising: (a) a ground plane; (b) a pair of end fed radiating elements, each one having a first and second end, the first end of each one of the pair of radiating elements being fastened to the ground plane and the radiating elements having planar surfaces, such surfaces being disposed in intersecting planes; and (c) a feed line having a pair of terminals, each one feeding the second end of a different one of the pair of radiating elements, such feed line including an outer conductor and an inner conductor, the outer conductor being fastened to the ground plane, and wherein the second ends of the pair of radiating elements are coupled through a continuous transistion to a different one of the pair of conductors.
Claim 3
Dependent Claim
19 words
The antenna element recited in claim 1 wherein the feed ends of the pair of radiating elements are tapered.
Claim 4
Dependent Claim
38 words
The antenna element recited in claim 2 wherein the length of the radiating elements from the feed terminal thereof to the ground plane is slightly greater than the wavelength of the lowest operating frequency of the antenna element.
References Cited (Backward Citations)
US3013226A
Cited
US3087159A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-01-01 | 1982-07-03 | 1983-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-01 | 1986-07-03 | 1987-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-01 | 1990-07-03 | 1991-01-02 | $7700.00 | Window Closed / Lapsed |